焊的

Based on the theory of eletrodynamics and other related subjects, an energy model was established for studying the mechanism of projected transfer mode by introducing "Surface Evolver" as a means of FEM analysis, by commutating and presenting the energy (eletromagnetic, gravity and so on) in the droplet transfer system.

摘 要：为研究MIG/MAG焊的射滴过渡机制，引入Surface Evolver软件作为有限元分析手段，根据电动力学和其它相关学科的基础理论，通过对射滴过渡系统中电磁能和重力势能的数学变换和描述，建立了适合于该软件运行条件的射滴过渡能量模型。

Quite a bit of heat is needed, due to the thickness of the copper pipe, and an electrical soldering iron probably won't be able to deliver sufficent heat.

因为铜管有一定的百度，所以有可能锡焊的温度不够，它对温度的要求是比较高的。

It was found that the mechanical properties of the joints decreased by the alclad and it will be increased dramatically by removing the alclad. The effect of alclad on the bottom surface is larger than on the top surface. The mechanical properties of 2024-T3 joints will fall down because alclad is entrapped into the welded joints by the rotating and stirring tools during the friction stir welding, similar with "inclusion" in fusion welding.

研究结果表明，包铝层的存在明显降低了2024-T3铝合金搅拌摩擦焊接头的力学性能；去掉包铝层后接头的性能显著提高；下表面包铝层对接头性能的影响大于上表面包铝层；当2024-T3铝合金表面带有包铝层进行搅拌摩擦焊接时，在搅拌头的旋转和搅拌作用下，包铝层被卷入焊缝中，形成类似于熔焊的&夹杂&，从而使得接头的力学性能下降。

A mathematic model, which deals with the relationship between maximum temperature of thick plate butt multipass welding and weld heat input, interpass temperature, ambient temperature and the distance of measuring points to heat source center, was founded using multivariant nonlinear regression analysis.

采用多元非线性回归的方法，建立了厚板对接多道焊的最高温度与焊接线能量、层间温度、环境温度以及测点到热源中心的距离之间的数学模型。

Such as the 12mm plate butt welded flat bottom closure φ3.2mm the electrode selection, welding current :80-85A, filling, cover the surface layer of the electrode selection φ4.0mm, welding current :165-175A, a reasonable choice welding current and electrode diameter, easy to control bath temperature, is the basis for forming weld.

如12mm平板对接平焊的封底层选用φ3.2mm的焊条，焊接电流：80-85A，填充，盖面层选用φ4.0mm的焊条，焊接电流：165-175A，合理选择焊接电流与焊条直径，易于控制熔池温度，是焊缝成形的基础。

On the basis of the results of laboratory and field experiments the question is discussed on the technology of ionic bead welding, and wear-resistant alloy for valve body and valve cup, and the data of the experiments in oil fields are listed. The results of ...

本文通过室内试验分析和现场试用情况论述了凡尔体和凡尔座堆焊耐磨合金及堆焊工艺方面的问题，并列出了现场的试用数据，结果表明等离子焊的凡尔体和凡尔座的使用寿命有明显提高。

For software,it takes use of the swing torch and integral contrast method to realize the seam auto tracking according to the characteristics of lap joint TIG welding;It points out the method of weighted handling to proceed a.

软件处理方面，针对搭接TIG焊的特点，采用摆动焊接方法，利用积分比较法，实现了焊缝的自动跟踪；提出加权处理的方法，对积分比较法进行修正，进一步保证了跟踪的实现，提高了跟踪精度。

For software, it takes use of the swing torch and integral contrast method to realize the seam auto tracking according to the characteristics of lap joint TIG welding; It points out the method of weighted handling to proceed a revising to the integral contrast, which ensures the tracking properly and improves the tracking accuracy.

软件处理方面，针对搭接TIG焊的特点，采用摆动焊接方法，利用积分比较法，实现了焊缝的自动跟踪；提出加权处理的方法，对积分比较法进行修正，进一步保证了跟踪的实现，提高了跟踪精度。

The silver brazing internal diameter of the valve casing of the mechanical tolerances and smooth surface of a very precise requirements to ensure adequate adhesion.

银钎焊的阀门套管的内部直径的机械公差和表面光滑度要求非常精确，以确保有足够的附着力。

Silver brazing the valve casing of the internal diameter of mechanical tolerances and suvce smoothness requirementsWafer Rubber Seated Butterfly Valves are very precise in order to ensure adequate adhesion.

银钎焊的阀门套管的内部直径的机械公差和表面光滑度要求非常精确，以确保有足够的附着力。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。